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LeetCode（193. Valid Phone Numbers）(sed用法)

193. Valid Phone Numbers Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone numbers. You may assume that a valid phone number must appear in one of the following two f…

193 Valid Phone Numbers

Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone numbers. You may assume that a valid phone number must appear in one of the following two formats: (xxx) xxx-xxxx or…

LeetCode 193. Valid Phone Numbers

分析 难度 易 来源 https://leetcode.com/problems/valid-phone-numbers/ 题目 Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone numbers. You may assume that a valid phone number m…

[LeetCode] Valid Phone Numbers 验证电话号码

Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone numbers. You may assume that a valid phone number must appear in one of the following two formats: (xxx) xxx-xxxx or…

Valid Phone Numbers

Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone numbers. You may assume that a valid phone number must appear in one of the following two formats: (xxx) xxx-xxxx or…

[Bash]LeetCode193. 有效电话号码 | Valid Phone Numbers

Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone numbers. You may assume that a valid phone number must appear in one of the following two formats: (xxx) xxx-xxxx or…

[LeetCode] 193. Valid Phone Numbers_Easy tag: Bash

Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone numbers. You may assume that a valid phone number must appear in one of the following two formats: (xxx) xxx-xxxx or…

LeetCode All in One 题目讲解汇总(持续更新中...)

终于将LeetCode的免费题刷完了,真是漫长的第一遍啊,估计很多题都忘的差不多了,这次开个题目汇总贴,并附上每道题目的解题连接,方便之后查阅吧~ 477 Total Hamming Distance 44.10% Meidum 475 Heaters  30.20% Easy 474 Ones and Zeroes  34.90% Meidum 473 Matchsticks to Square  31.80% Medium 472 Concatenated Words 29.20% Hard…

LeetCode Shell Problems

195. Tenth Line -- 第十行 How would you print just the 10th line of a file? Solution: awk 'NR==10' file.txt 194. Transpose File -- 转置文件 Given a text file file.txt, transpose its content. You may assume that each row has the same number of columns and ea…

【LeetCode】shell

195. Tenth Line 输出file.txt中的第十行 答案: # Read from the file file.txt and output the tenth line to stdout. #!/bin/bash cat file.txt | sed -n '10p' 193. Valid Phone Numbers 找出file.txt中符合(xxx) xxx-xxxx or xxx-xxx-xxxx格式的电话号码 答案: cat file.txt | grep '^(\([0…